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Unformatted text preview: x m k F l o x 1 x o x m s k k 5 m k = 800 N/m d m k d m k 4 m k = 800 N/m d m k 4 m k = 800 N/m d m k 2004 test Physics Honors Chapter 5 Test FORM 1 Given: then: ASSUME FRICTIONLESS, HORIZONTAL MOTION UNLESS OTHERWISE INSTRUCTED. ASSUME ALL SPRINGS ARE INITIALLY UNSTRETCHED AND UNCOMPRESSED. A spring has a force constant k = 450 N/m. It is compressed by pushing its end 1.5 cm to the left. Your hand then keeps the spring in place. 1) What force does the spring exert on your hand? 2) How much work must be performed on the spring to compress it by an additional 2.5 cm? A 0.01kg object is initially sliding at 9.0 m/s. It goes up a ramp (increasing its elevation by 1.5 m), and then moves horizontally before striking a spring of force constant k = 100 N/m. The spring is compressed by 5.0 cm as it completely stops the object. 3) How much heat energy was created during this motion? A child's toy wagon is pulled from rest by a constant force F = 50 N, which acts in a direction 50 from the vertical. 4) What is the kinetic energy of the wagon when it has moved a horizontal distance of 10 m? The engine in a 1500 kg racing car produces work at a rate of 300 kW. 5) If the engine maintains that power output for 5 minutes, how much work does it do? A 10kg block is dropped from a height of 5.0 m above the top of a spring of force constant k = 75 N/m. 6) At what rate is gravity doing work on the block at the instant it strikes the spring? 7) What is the maximum speed of the block? A 10kg object is initially moving north at 15.0 m/s. 8) How much work must be done on the object to accelerate it to a final velocity of 60 m/s to the east? A box of mass m = 40 kg is released from rest at the top of a ramp. The coefficient of kinetic friction between the box and the ramp is = 0.2, and the ramp makes an angle = 35 to the horizontal. After sliding a distance x = 5 m down the ramp, the box strikes a spring of force constant k = 500 N/m, as shown at right. The box eventually comes to rest. 9) How far from its initial release position does the box move before first coming to a stop? 2005 test Physics Honors Chapter 5 Test A spring of force constant k = 50 N/m is suspended vertically from the ceiling and holds a 0.5 kg mass at rest, as shown at right. The mass is then lifted up with force F so that the spring is compressed a distance x 1 = 0.20 m from its natural length. The mass is held at rest at that final position. The mass is held at rest at that final position....
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 Spring '09
 Ramesh
 Physics, Friction

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